Ok, so i need some advise i'm going for a twin turbo set up but i am torn between the APS and JWT
I like the fact that the JWT has virtually no lag and the intercooler fits perfectly on the G, but i also love the sound of the APS and it has a lot more potential if i decide to build the engine down the road. what do u guys think?

 

Wait, there's a difference in the way turbos spooling sound between TT kits??

 

both have turbo upgrades but i love the torque the jwt puts out and even going bigger turbos it still barely has lag

 

JWT TT all the way.

 

I too would say go with JWT kit, they R&D'd the hell out of it, it's gotta be good

 

I'd say JWT TT kit....

 

In what way? That they use zero fuel return and a SS box?

Not saying the APS us MUCH better, but Unichip and the APS fuel system are both superior.

As far as the turbochargers themselves . . . . . . NON OF THE TURBO KITS HAVE ANY LAG. Period. End of story. Get over this "lag" issue.

Both are nice kits. But if you plan on using JWT and going with more power than out-of-the-box tune, I suggest you get a UTEC or something and a return fuel system.

That said, APS TT ftw!!! (I know I'm biased )

 

Not many out of the box kits use a fuel return system and are still considered superior, look at the TN ST kit, by far the most sought after single turbo kit for the Z/G and it doesn't use a return system. Could it benefit from one? For sure it can. All I meant by my previous statement is that JWT took their sweet time to release their TT kit because it was being R&D'd for a long time. I know you're biased so I'll just say that the APS TT is also a darn good kit

 

Although both kits are great and IMO, they are the best 2 available kits for these cars. I would have to say the clear choice for me would be the JWT TT kit (standard 530BB's or with the 700BB's) As far as the return fuel line and the EM systems go...that has been debated to no end, and all I have to say is the proof is in the puddin! There are tons of JWT TT kits out there now and probably 95% of them DO NOT have a fuel return line and, alot of them are making over 500 whp, and some over 600 and even 700+....still with a split second box, and NO return fuel line. IMO, JWT de-bunked the whole "you need a fuel return line" theory.

Go with the JWT.

 

OMG not another one of these threads.

 

 

I'm sorry but that is not a very good statement to be putting out there for new comers. While you are right that there are some high horsepower cars with a returnless system you basically give the impression that JWT found out that all the research engineers , racers and mechanics have over the years is worthless. It has been proven that a return system will be more stable than a returnless system and that it will in the end offer more reliability and safety than any returnless system. Even if that safety is 5% better it is still better. By no means does this say you cannot reach you power levels with the returnless system but giving the impression that JWT discovered that our returnless system is just as capable and safe as a return system is un true and I don't think that Jim would support that statement either.

 

Is it not true the JWT and APS both use Garrett turbos? I have have been meaning to search out the compressor maps and other info about the turbos both kit's. Besides that both kits appear very well made. Also, JWT only lets a authorized dealer install the kits, APS does not care either way. Thats a huge difference. Anyone have the turbo information and compressor maps for both these kits?

 

Both kits are capable, but I think in out of box trim on a stock block, the APS is the better kit.

Your concerns about lag should be forgetten about right now. the two kits use almost identical turbos. The spool time is nearly identical and like Devil stated, lag on either kit is all but nonexistant. From my knowledge, JWT uses a smaller housing on their turbo than APS does, which from the research I have done basically limits the potential of the turbos much more so than adding increased spool time vs a kit like APS, or even the greddy. You also have to remember that with any of these TT kits, you will have so much power the way it is, any slight increase below 3000 rpms just adds to traction issues. Besides, you will rarely see your RPMS much below 4000 during aggressive driving, and it is common knowledge that the JWT turbos start choking out in the upper RPMS - just look at the dynos that are out there.

Your concern about the sound is also something to forget about. Put the same BOV on either kit, and I am confident, you would have a hard timing distinguishing between the two in terms of sound.

Really it comes down to what is included in the box. With the APS, you get a better EMS, Fuel system, boost control, and you get a full replacment oil pan.

 

Siiiiizzzzzzearch...
J/K on a serious note, do some research as to what you short and long term power goals are with the car, and plan accordingly to your budget and needs. some people get way in over their heads and realize they made the wrong initial choice. Look at the components a respective kit comes with,the power goals you have immidiately,the power goals you may want in the future,and always take into consideration the "What if's".

 

both are great kits but for me I'd choose the APS simply because its a more complete kit.

 

Between these 2 kits I would go with the APS because it has more power potential and the JWT kit looks cheaply made and the intercooler looks gay.

 

yes, more complete, I can't talk about the JWT but the APS kit comes with high quality parts and every nut and bold!!!

 

The JWT BB 530 kit uses GT2554Rs. The BB700 kit uses GT2860Rs and the APS regular kit uses something resembling a GT2871R. No one knows for sure what the APS Extreme kit uses though...I personally think the APS Extreme kit uses a pair of GT3076Rs but like I said, no one knows for sure...Attached are the compressor maps for the 2554, 2860, 2871, and 3076. That would be the JWT BB530, BB700, APS standard kit, and APS Extreme kit in that order.

 

+1

Not to mention if I need any part of that JWT TT Kit It's available the next business day straight from JWT. Turbonetics has great customer service as well. That goes a long way...